CVE-2026-12667
IBM MQ .NET client is vulnerable to XML external entity injection
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
0th
IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 could allow an authenticated attacker to read files from a vulnerable .NET client or cause limited denial of service due to improper handling of XML external entities in RFH2 folder parsing.
| CWE | CWE-611 |
| Vendor | ibm |
| Product | mq |
| Published | Sep 15, 2026 |
| Last Updated | Sep 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
Low
Affected Versions
IBM / MQ
9.1.0.0 ≤ 9.1.0.37 LTS 9.2.0.0 ≤ 9.2.0.43 LTS 9.3.0.0 ≤ 9.3.0.41 LTS 9.3.0.0 ≤ 9.3.5.1 CD 9.4.0.0 ≤ 9.4.0.25 LTS 9.4.0.0 ≤ 9.4.5.1 CD 10.0.0.0